OpenVPN Change Log
Copyright (C) 2002-2011 OpenVPN Technologies, Inc. <sales@openvpn.net>

2011.12.14 -- Version 2.2.2
David Sommerseth (1):
      Only warn about non-tackled IPv6 packets once

Gert Doering (3):
      add missing break between "case IPv4" and "case IPv6"
      bump tap driver version from 9.8 to 9.9
      log error message and exit for "win32, tun mode, tap driver version 9.8"

Samuli Seppänen (1):
      Backported pkcs11-related parts of 7a8d707237bb18 to 2.2 branch

2011.07.01 -- Version 2.2.1
David Sommerseth (4):
	      Don't define ENABLE_PUSH_PEER_INFO if SSL is not available
	      Fix compiling issues with pkcs11 when --disable-management is configured
	      Remove support for Linux 2.2 configuration fallback
	      Revert "Add new openssl.cnf to easy-rsa/Windows"
	      Prepared for releasing OpenVPN 2.2.1

Gustavo Zacarias (1):
	      Fix compile issues when using --enable-small and --disable-ssl/--disable-crypto

Matthew L. Creech (1):
	      Fix 2.2.0 build failure when management interface disabled

Robert Fischer (2):
	      Added info about --show-proxy-settings
	      Documented --x509-username-field option

Samuli Seppänen (5):
	      Fix a build-ca issue on Windows
	      Add new openssl.cnf to easy-rsa/Windows
	      Updated "easy-rsa" for OpenSSL 1.0.0
	      Made domake-win builds to use easy-rsa/2.0/openssl-1.0.0.cnf
	      Fixes to easy-rsa/2.0

Simon Matter (1):
	      Fix issues with some older GCC compilers

2011.04.21 -- Version 2.2.0
David Sommerseth (4):
      Fix the --client-cert-not-required feature
      Change the default --tmp-dir path to a more suitable path
      Improve the mysprintf() issue in openvpnserv.c
      Add a simple comment regarding openvpn_snprintf() is duplicated

Gert Doering (1):
      Add more detailed explanation regarding the function of "--rdns-internal"

Gisle Vanem (1):
      Avoid re-defining uint32_t when using mingw compiler

James Yonan (1):
      Fixed bug in port-share that could cause port share process to crash with output like this:

Robert Fischer / rf (4):
      Update man page with info about --capath
      Update man page with info about --connect-timeout
      Update man page with info about --remote-random-hostname
      Added man page entry for --management-client

Samuli Seppänen (6):
      Add man page entry for --redirect-private
      Change all CRLF linefeeds to LF linefeeds
      Fix a bug in devcon source code handling
      Removed Win2k from supported platforms list in INSTALL and win/openvpn.nsi
      Fixed copying of tapinstall.exe to dist/bin when using prebuilt TAP-drivers
      Fixed a bug with GUI icon deletion on upgrade from 2.2-RC or earlier

chantra (1):
      Clarify --tmp-dir option

2011.03.24 -- Version 2.2-RC2
Alon Bar-Lev (1):
      Windows cross-compile cleanup

David Sommerseth (2):
      Open log files as text files on Windows
      Clarify default value for the --inactive option.

Gert Doering (1):
      Implement IPv6 in TUN mode for Windows TAP driver.

Samuli Seppänen (6):
      Added support for prebuilt TAP-drivers. Automated embedding manifests.
      Fixes to win/openvpn.nsi
      Replaced config-win32.h with win/config.h.in
      Updated INSTALL-win32.txt
      Fixes to Makefile.am
      Clarified --client-config-dir section on the man-page.

Ville Skyttä (1):
      Fix line continuation in chkconfig init script description.

2011.02.28 -- Version 2.2-RC
David Sommerseth (3):
      Make the --x509-username-field feature an opt-in feature
      Fix compiler warning when compiling against OpenSSL 1.0.0
      Fix packaging of config-win32.h and service-win32/msvc.mak

James Yonan (1):
      Minor addition of logging info before and after execution of Windows net commands.

Matthias Andree (1):
      Change variadic macros to C99 style.

Samuli Seppänen (15):
      Added ENABLE_PASSWORD_SAVE to config-win32.h
      Added a nmake makefile for openvpnserv.exe building
      Moved TAP-driver version info to version.m4. Cleaned up win/settings.in.
      Added helper functionality to win/wb.py
      Added support for viewing config-win32.h paramters to win/show.py
      Added comments and made small modifications to win/msvc.mak.in
      Added command-line switch to win/build_all.py to skip TAP driver building
      Added configure.h and version.m4 variable parsing to win/config.py
      Added openvpnserv.exe building to win/build.py
      Added comments to win/build_ddk.py
      Several modifications to win/make_dist.py to allow building the NSI installer
      Copied install-win32/setpath.nsi to win/setpath.nsi
      Added first version of NSI installer script to win/openvpn.nsi
      Changes to buildsystem patchset
      Temporary snprintf-related fix to service-win32/openvpnserv.c

2010.11.25 -- Version 2.2-beta5

Samuli Seppänen (1):
      Fixed an issue causing a build failure with MS Visual Studio 2008.

2010.11.18 -- Version 2.2-beta4

David Sommerseth (10):
      Clarified --explicit-exit-notify man page entry
      Clean-up: Remove pthread and mutex locking code
      Clean-up: Remove more dead and inactive code paths
      Clean-up: Removing useless code - hash related functions
      Use stricter snprintf() formatting in socks_username_password_auth() (v3)
      Fix compiler warnings about not used dummy() functions
      Fixed potential misinterpretation of boolean logic
      Only add some functions when really needed
      Removed functions not being used anywhere
      Merged add_bypass_address() and add_host_route_if_nonlocal()

Gert Doering (3):
      Integrate support for TAP mode on Solaris, written by Kazuyoshi Aizawa <admin2@whiteboard.ne.jp>.
      Make "topology subnet" work on Solaris
      Improved man page entry for script_type

James Yonan (5):
      Fixed initialization bug in route_list_add_default_gateway (Gert Doering).
      Implement challenge/response authentication support in client mode
      Make base64.h have the same conditional compilation expression as base64.c.
      Fixed compiling issues when using --disable-crypto
      In verify_callback, the subject var should be freed by OPENSSL_free, not free

Jesse Young (1):
      Remove hardcoded path to resolvconf

Lars Hupel (1):
      Add HTTP/1.1 Host header

Pierre Bourdon (1):
      Adding support for SOCKS plain text authentication

Samuli Seppänen (2):
      Added check for variable CONFIGURE_DEFINES into options.c
      Added command-line option parser and an unsigned build option to build_all.py

2010.08.21 -- Version 2.2-beta3

* Attempt to fix issue where domake-win build system was not properly
  signing drivers and .exe files.

  Added win/tap_span.py for building multiple versions of the TAP driver
  and tapinstall binaries using different DDK versions to span from Win2K
  to Win7 and beyond.

* Community patches
  David Sommerseth (2):
      Test framework improvment - Do not FAIL if t_client.rc is missing
      More t_client.sh updates - exit with SKIP when we want to skip

  Gert Doering (4):
      Fix compile problems on NetBSD and OpenBSD
      Fix <net/if.h> compile time problems on OpenBSD for good
      full "VPN client connect" test framework for OpenVPN
      Build t_client.sh by configure at run-time.

  chantra (1):
      Fixes openssl-1.0.0 compilation warning

2010.08.16 -- Version 2.2-beta2

* Windows security issue:
  Fixed potential local privilege escalation vulnerability in
  Windows service. The Windows service did not properly quote the
  executable filename passed to CreateService.  A local attacker
  with write access to the root directory C:\ could create an
  executable that would be run with the same privilege level as
  the OpenVPN Windows service.  However, since non-Administrative
  users normally lack write permission on C:\, this vulnerability
  is generally not exploitable except on older versions of Windows
  (such as Win2K) where the default permissions on C:\ would allow
  any user to create files there.
  Credit:  Scott Laurie, MWR InfoSecurity

* Added Python-based based alternative build system for Windows using
  Visual Studio 2008 (in win directory).

* When aborting in a non-graceful way, try to execute do_close_tun in
  init.c prior to daemon exit to ensure that the tun/tap interface is
  closed and any added routes are deleted.

* Fixed an issue where AUTH_FAILED was not being properly delivered
  to the client when a bad password is given for mid-session reauth,
  causing the connection to fail without an error indication.

* Don't advance to the next connection profile on AUTH_FAILED errors.

* Fixed an issue in the Management Interface that could cause
  a process hang with 100% CPU utilization in --management-client
  mode if the management interface client disconnected at the
  point where credentials are queried.

* Fixed an issue where if reneg-sec was set to 0 on the client,
  so that the server-side value would take precedence,
  the auth_deferred_expire_window function would incorrectly
  return a window period of 0 seconds.  In this case, the
  correct window period should be the handshake window
  period.

* Modified ">PASSWORD:Verification Failed" management interface
  notification to include a client reason string:

    >PASSWORD:Verification Failed: 'AUTH_TYPE' ['REASON_STRING']

* Enable exponential backoff in reliability layer
  retransmits.

* Set socket buffers (SO_SNDBUF and SO_RCVBUF) immediately after
  socket is created rather than waiting until after connect/listen.

* Management interface performance optimizations:

  1. Added env-filter MI command to perform filtering on env vars
     passed through as a part of --management-client-auth

  2. man_write will now try to aggregate output into larger blocks
     (up to 1024 bytes) for more efficient i/o

* Fixed minor issue in Windows TAP driver DEBUG builds
  where non-null-terminated unicode strings were being
  printed incorrectly.

* Fixed issue on Windows with MSVC compiler, where TCP_NODELAY support
  was not being compiled in.

* Proxy improvements:

  Improved the ability of http-auth "auto" flag to dynamically detect
  the auth method required by the proxy.

  Added http-auth "auto-nct" flag to reject weak proxy auth methods.

  Added HTTP proxy digest authentication method.

  Removed extraneous openvpn_sleep calls from proxy.c.

* Implemented http-proxy-override and http-proxy-fallback directives to make it
  easier for OpenVPN client UIs to start a pre-existing client config file with
  proxy options, or to adaptively fall back to a proxy connection if a direct
  connection fails.

* Implemented a key/value auth channel from client to server.

* Fixed issue where bad creds provided by the management interface
  for HTTP Proxy Basic Authentication would go into an infinite
  retry-fail loop instead of requerying the management interface for
  new creds.

* Added support for MSVC debugging of openvpn.exe in settings.in:

  # Build debugging version of openvpn.exe
  !define PRODUCT_OPENVPN_DEBUG

* Implemented multi-address DNS expansion on the network field of route
  commands.

  When only a single IP address is desired from a multi-address DNS
  expansion, use the first address rather than a random selection.

* Added --register-dns option for Windows.

  Fixed some issues on Windows with --log, subprocess creation
  for command execution, and stdout/stderr redirection.

* Fixed an issue where application payload transmissions on the
  TLS control channel (such as AUTH_FAILED) that occur during
  or immediately after a TLS renegotiation might be dropped. 

* Added warning about tls-remote option in man page.

2009.12.11 -- Version 2.1.1

* Fixed some breakage in openvpn.spec (which is required to build an
  RPM distribution) where it was referencing a non-existent
  subdirectory in the tarball, causing it to fail (patch from
  David Sommerseth).

2009.12.11 -- Version 2.1.0

* Fixed a couple issues in sample plugins auth-pam.c and down-root.c.
  (1) Fail gracefully rather than segfault if calloc returns NULL.
  (2) The openvpn_plugin_abort_v1 function can potentially be called
  with handle == NULL.  Add code to detect this case, and if  so, avoid
  dereferencing pointers derived from handle  (Thanks to David
  Sommerseth for finding this bug).

* Documented "multihome" option in the man page.

2009.11.20 -- Version 2.1_rc22

* Fixed a client-side bug on Windows that occurred when the
  "dhcp-pre-release" or "dhcp-renew" options were combined with
  "route-gateway dhcp".  The release/renew would not occur
  because the Windows DHCP renew function is blocking and
  therefore must be called from another process or thread
  so as not to stall the tunnel.

* Added a hard failure when peer provides a certificate chain
  with depth > 16.  Previously, a warning was issued.

2009.11.12 -- Version 2.1_rc21

* Rebuilt OpenVPN Windows installer with OpenSSL 0.9.8l to address
  CVE-2009-3555.  Note that OpenVPN has never relied on the session
  renegotiation capabilities that are built into the SSL/TLS protocol,
  therefore the fix in OpenSSL 0.9.8l (disable SSL/TLS renegotiation
  completely) will not adversely affect OpenVPN mid-session SSL/TLS
  renegotation or any other OpenVPN capabilities.

* Added additional session renegotiation hardening.  OpenVPN has always
  required that mid-session renegotiations build up a new SSL/TLS
  session from scratch.  While the client certificate common name is
  already locked against changes in mid-session TLS renegotiations, we
  now extend this locking to the auth-user-pass username as well as all
  certificate content in the full client certificate chain.

2009.10.01 -- Version 2.1_rc20

* Fixed a bug introduced in 2.1_rc17 (svn r4436) where using the
  redirect-gateway option by itself, without any extra parameters,
  would cause the option to be ignored.

* Fixed build problem when ./configure --disable-server is used.

* Fixed ifconfig command for "topology subnet" on FreeBSD (Stefan Bethke).

* Added --remote-random-hostname option.

* Added "load-stats" management interface command to get global server
  load statistics.

* Added new ./configure flags:

  --disable-def-auth      Disable deferred authentication
  --disable-pf            Disable internal packet filter

* Added "setcon" directive for interoperability with SELinux (Sebastien
  Raveau).

* Optimized PUSH_REQUEST handshake sequence to shave several seconds
  off of a typical client connection initiation.

* The maximum number of "route" directives (specified in the config
  file or pulled from a server) can now be configured via the new
  "max-routes" directive.

* Eliminated the limitation on the number of options that can be pushed
  to clients, including routes.  Previously, all pushed options needed
  to fit within a 1024 byte options string.

* Added --server-poll-timeout option : when polling possible remote
  servers to connect to in a round-robin fashion, spend no more than
  n seconds waiting for a response before trying the next server.

* Added the ability for the server to provide a custom reason string
  when an AUTH_FAILED message is returned to the client.  This
  string can be set by the server-side managment interface and read
  by the client-side management interface.

* client-kill management interface command, when issued on server, will
  now send a RESTART message to client.
  This feature is intended to make UDP clients respond the same as TCP
  clients in the case where the server issues a RESTART message in
  order to force the client to reconnect and pull a new options/route
  list.

2009.07.16 -- Version 2.1_rc19

* In Windows TAP driver, refactor DHCP/ARP packet injection code to
  use a DPC (deferred procedure call) to defer packet injection until
  IRQL < DISPATCH_LEVEL, rather than calling NdisMEthIndicateReceive
  in the context of AdapterTransmit.  This is an attempt to reduce kernel
  stack usage, and prevent EXCEPTION_DOUBLE_FAULT BSODs that have been
  observed on Vista.  Updated TAP driver version number to 9.6.

* In configure.ac, use datadir instead of datarootdir for compatibility
  with <autoconf-2.60.

2009.06.07 -- Version 2.1_rc18

* Fixed compile error on ./configure --enable-small

* Fixed issue introduced in r4475 (2.1-rc17) where cryptoapi.c change
  does not build on Windows on non-MINGW32.

2009.05.30 -- Version 2.1_rc17

* Reduce the debug level (--verb) at which received management interface
  commands are echoed from 7 to 3.  Passwords will be filtered.

* Fixed race condition in management interface recv code on
  Windows, where sending a set of several commands to the
  management interface in quick succession might cause the
  latter commands in the set to be ignored.

* Increased management interface input command buffer size
  from 256 to 1024 bytes.

* Minor tweaks to Windows build system.

* Added "redirect-private" option which allows private subnets
  to be pushed to the client in such a way that they don't accidently
  obscure critical local addresses such as the DHCP server address and
  DNS server addresses.

* Added new 'autolocal' redirect-gateway flag.  When enabled, the OpenVPN
  client will examine the routing table and determine whether (a) the
  OpenVPN server is reachable via a locally connected interface, or (b)
  traffic to the server must be forwarded through the default router.
  Only add a special bypass route for the OpenVPN server if (b) is true.
  If (a) is true, behave as if the 'local' flag is specified, and do not
  add a bypass route.

  The new 'autolocal' flag depends on the non-portable test_local_addr()
  function in route.c, which is currently only implemented for Windows.
  The 'autolocal' flag will act as a no-op on platforms that have not
  yet defined a test_local_addr() function.

* Increased TLS_CHANNEL_BUF_SIZE to 2048 from 1024 (this will allow for
  more option content to be pushed from server to client).

* Raised D_MULTI_DROPPED debug level to 4 from 3 to filter out (at debug
  levels <=3) a common and usually innocuous warning.

* Fixed issue of symbol conflicts interfering with Windows CryptoAPI
  functionality (Alon Bar-Lev).

* Fixed bug where the remote_X environmental variables were not being
  set correctly when the 'local' option is specifed.

2009.05.17 -- Version 2.1_rc16

* Windows installer changes:

  1. ifdefed out the check Windows version code which is causing
  problems on Windows 7

  2. don't define SF_SELECTED if it is already defined

  3. Use LZMA instead of BZIP2 compression for better compression

  4. Upgraded OpenSSL to 0.9.8k

* Added the ability to read the configuration file
  from stdin, when "stdin" is given as the config
  file name.

* Allow "management-client" directive to be used
  with unix domain sockets.

* Added errors-to-stderr option.  When enabled, fatal errors
  that result in the termination of the daemon will be written
  to stderr.

* Added optional "nogw" (no gateway) flag to --server-bridge
  to inhibit the pushing of the route-gateway parameter to
  clients.

* Added new management interface command "pid" to show the
  process ID of the current OpenVPN process (Angelo Laub).

* Fixed issue where SIGUSR1 restarts would fail if private
  key was specified as an inline file.

* Added daemon_start_time and daemon_pid environmental variables.

* In management interface, added new ">CLIENT:ESTABLISHED" notification.

* Build fixes:

  1. Fixed some issues with C++ style comments that leaked into the code.

  2. Updated configure.ac to work on MinGW64.

  3. Updated common.h types for _WIN64.

  4. Fixed issue involving an #ifdef in a macro reference that breaks early gcc
     compilers.

  5. In cryptoapi.c, renamed CryptAcquireCertificatePrivateKey to
     OpenVPNCryptAcquireCertificatePrivateKey to work around
     a symbol conflict in MinGW-5.1.4.

2008.11.19 -- Version 2.1_rc15

* Fixed issue introduced in 2.1_rc14 that may cause a
  segfault when a --plugin module is used.

* Added server-side --opt-verify option: clients that connect
  with options that are incompatible with those of the server
  will be disconnected (without this option, incompatible
  clients would trigger a warning message in the server log
  but would not be disconnected).

* Added --tcp-nodelay option: Macro that sets TCP_NODELAY socket
  flag on the server as well as pushes it to connecting clients.

* Minor options check fix: --no-name-remapping is a
  server-only option and should therefore generate an
  error when used on the client.

* Added --prng option to control PRNG (pseudo-random
  number generator) parameters.  In previous OpenVPN
  versions, the PRNG was hardcoded to use the SHA1
  hash.  Now any OpenSSL hash may be used.  This is
  part of an effort to remove hardcoded references to
  a specific cipher or cryptographic hash algorithm.

* Cleaned up man page synopsis.

2008.11.16 -- Version 2.1_rc14

* Added AC_GNU_SOURCE to configure.ac to enable struct ucred,
  with the goal of fixing a build issue on Fedora 9 that was
  introduced in 2.1_rc13.

* Added additional method parameter to --script-security to preserve
  backward compatibility with system() call semantics used in OpenVPN
  2.1_rc8 and earlier.  To preserve backward compatibility use:

    script-security 3 system

* Added additional warning messages about --script-security 2
  or higher being required to execute user-defined scripts or
  executables.

* Windows build system changes:

  Modified Windows domake-win build system to write all openvpn.nsi
  input files to gen, so that gen can be disconnected from
  the rest of the source tree and makensis openvpn.nsi will
  still function correctly.

  Added additional SAMPCONF_(CA|CRT|KEY) macros to settings.in
  (commented out by default).

  Added optional files SAMPCONF_CONF2 (second sample configuration
  file) and SAMPCONF_DH (Diffie-Helman parameters) to Windows
  build system, and may be defined in settings.in.

* Extended Management Interface "bytecount" command
  to work when OpenVPN is running as a server.
  Documented Management Interface "bytecount" command in
  management/management-notes.txt.

* Fixed informational message in ssl.c to properly indicate
  deferred authentication.

* Added server-side --auth-user-pass-optional directive, to allow
  connections by clients that do not specify a username/password, when a
  user-defined authentication script/module is in place (via
  --auth-user-pass-verify, --management-client-auth, or a plugin module).

* Changes to easy-rsa/2.0/pkitool and related openssl.cnf:

  Calling scripts can set the KEY_NAME environmental variable to set
  the "name" X509 subject field in generated certificates.

  Modified pkitool to allow flexibility in separating the Common Name
  convention from the cert/key filename convention.

  For example:

  KEY_CN="James's Laptop" KEY_NAME="james" ./pkitool james

  will create a client certificate/key pair of james.crt/james.key
  having a Common Name of "James's Laptop" and a Name of "james".

* Added --no-name-remapping option to allow Common Name, X509 Subject,
  and username strings to include any printable character including
  space, but excluding control characters such as tab, newline, and
  carriage-return (this is important for compatibility with external
  authentication systems).

  As a related change, added --status-version 3 format (and "status 3"
  in the management interface) which uses the version 2 format except
  that tabs are used as delimiters instead of commas so that there
  is no ambiguity when parsing a Common Name that contains a comma.

  Also, save X509 Subject fields to environment, using the naming
  convention:

  X509_{cert_depth}_{name}={value}

  This is to avoid ambiguities when parsing out the X509 subject string
  since "/" characters could potentially be used in the common name.

* Fixed some ifconfig-pool issues that precluded it from being combined
  with --server directive.

  Now, for example, we can configure thusly:

    server 10.8.0.0 255.255.255.0 nopool
    ifconfig-pool 10.8.0.2 10.8.0.99 255.255.255.0

  to have ifconfig-pool manage only a subset
  of the VPN subnet.

* Added config file option "setenv FORWARD_COMPATIBLE 1" to relax
  config file syntax checking to allow directives for future OpenVPN
  versions to be ignored.

2008.10.07 -- Version 2.1_rc13

* Bundled OpenSSL 0.9.8i with Windows installer.

* Management interface can now listen on a unix
  domain socket, for example:

    management /tmp/openvpn unix

  Also added management-client-user and management-client-group
  directives to control which processes are allowed to connect
  to the socket.

* Copyright change to OpenVPN Technologies, Inc.

2008.09.23 -- Version 2.1_rc12

* Patched Makefile.am so that the new t_cltsrv-down.sh script becomes
  part of the tarball (Matthias Andree).

* Fixed --lladdr bug introduced in 2.1-rc9 where input validation code
  was incorrectly expecting the lladdr parameter to be an IP address
  when it is actually a MAC address (HoverHell).

2008.09.14 -- Version 2.1_rc11

* Fixed a bug that can cause SSL/TLS negotiations in UDP mode
  to fail if UDP packets are dropped.

2008.09.10 -- Version 2.1_rc10

* Added "--server-bridge" (without parameters) to enable
  DHCP proxy mode:  Configure server mode for ethernet
  bridging using a DHCP-proxy, where clients talk to the
  OpenVPN server-side DHCP server to receive their IP address
  allocation and DNS server addresses.

* Added "--route-gateway dhcp", to enable the extraction
  of the gateway address from a DHCP negotiation with the
  OpenVPN server-side LAN.

* Fixed minor issue with --redirect-gateway bypass-dhcp or bypass-dns
  on Windows.  If the bypass IP address is 0.0.0.0 or 255.255.255.255,
  ignore it.

* Warn when ethernet bridging that the IP address of the bridge adapter
  is probably not the same address that the LAN adapter was set to
  previously.

* When running as a server, warn if the LAN network address is
  the all-popular 192.168.[0|1].x, since this condition commonly
  leads to subnet conflicts down the road.

* Primarily on the client, check for subnet conflicts between
  the local LAN and the VPN subnet.

* Added a 'netmask' parameter to get_default_gateway, to return
  the netmask of the adapter containing the default gateway.
  Only implemented on Windows so far.  Other platforms will
  return 255.255.255.0.  Currently the netmask information is
  only used to warn about subnet conflicts.

* Minor fix to cryptoapi.c to not compile itself unless USE_CRYPTO
  and USE_SSL flags are enabled (Alon Bar-Lev).

* Updated openvpn/t_cltsrv.sh (used by "make check") to conform to new
  --script-security rules.  Also adds retrying if the addresses are in
  use (Matthias Andree).

* Fixed build issue with ./configure --disable-socks --disable-http.

* Fixed separate compile errors in options.c and ntlm.c that occur
  on strict C compilers (such as old versions of gcc) that require
  that C variable declarations occur at the start of a {} block,
  not in the middle.

* Workaround bug in OpenSSL 0.9.6b ASN1_STRING_to_UTF8, which
  the new implementation of extract_x509_field_ssl depends on.

* LZO compression buffer overflow errors will now invalidate
  the packet rather than trigger a fatal assertion.

* Fixed minor compile issue in ntlm.c (mid-block declaration).

* Added --allow-pull-fqdn option which allows client to pull DNS names
  from server (rather than only IP address) for --ifconfig, --route, and
  --route-gateway.  OpenVPN versions 2.1_rc7 and earlier allowed DNS names
  for these options to be pulled and translated to IP addresses by default.
  Now --allow-pull-fqdn will be explicitly required on the client to enable
  DNS-name-to-IP-address translation of pulled options.

* 2.1_rc8 and earlier did implicit shell expansion on script
  arguments since all scripts were called by system().
  The security hardening changes made to 2.1_rc9 no longer
  use system(), but rather use the safer execve or CreateProcess
  system calls.  The security hardening also introduced a
  backward incompatibility with 2.1_rc8 and earlier in that
  script parameters were no longer shell-expanded, so
  for example:

    client-connect "docc CLIENT-CONNECT"

  would fail to work because execve would try to execute
  a script called "docc CLIENT-CONNECT" instead of "docc"
  with "CLIENT-CONNECT" as the first argument.

  This patch fixes the issue, bringing the script argument
  semantics back to pre 2.1_rc9 behavior in order to preserve
  backward compatibility while still using execve or CreateProcess
  to execute the script/executable.

* Modified ip_or_dns_addr_safe, which validates pulled DNS names,
  to more closely conform to RFC 3696:

  (1) DNS name length must not exceed 255 characters

  (2) DNS name characters must be limited to alphanumeric,
      dash ('-'), and dot ('.')

* Fixed bug in intra-session TLS key rollover that was introduced with
  deferred authentication features in 2.1_rc8.

2008.07.31 -- Version 2.1_rc9

* Security Fix -- affects non-Windows OpenVPN clients running
  OpenVPN 2.1-beta14 through 2.1-rc8 (OpenVPN 2.0.x clients are NOT
  vulnerable nor are any versions of the OpenVPN server vulnerable).
  An OpenVPN client connecting to a malicious or compromised
  server could potentially receive an "lladdr" or "iproute" configuration
  directive from the server which could cause arbitrary code execution on
  the client. A successful attack requires that (a) the client has agreed
  to allow the server to push configuration directives to it by including
  "pull" or the macro "client" in its configuration file, (b) the client
  successfully authenticates the server, (c) the server is malicious or has
  been compromised and is under the control of the attacker, and (d) the
  client is running a non-Windows OS.  Credit: David Wagner.
  CVE-2008-3459

* Miscellaneous defensive programming changes to multiple
  areas of the code.  In particular, use of the system() call
  for calling executables such as ifconfig, route, and
  user-defined scripts has been completely revamped in favor
  of execve() on unix and CreateProcess() on Windows.

* In Windows build, package a statically linked openssl.exe to work around
  observed instabilities in the dynamic build since the migration to
  OpenSSL 0.9.8h.

2008.06.11 -- Version 2.1_rc8

* Added client authentication and packet filtering capability
  to management interface.  In addition, allow OpenVPN plugins
  to take advantage of deferred authentication and packet
  filtering capability.

* Added support for client-side connection profiles.

* Fixed unbounded memory growth bug in environmental variable
  code that could have caused long-running OpenVPN sessions
  with many TLS renegotiations to incrementally
  increase memory usage over time.

* Windows release now packages openssl-0.9.8h.

* Build system changes -- allow building on Windows using
  autoconf/automake scripts (Alon Bar-Lev).

* Changes to Windows build system to make it easier to do
  partial builds, with a reduced set of prerequisites,
  where only a subset of OpenVPN installer
  components are built.  See ./domake-win comments.

* Cleanup IP address for persistence interfaces for tap and also
  using ifconfig, gentoo#209055 (Alon Bar-Lev).

* Fall back to old version of extract_x509_field for OpenSSL 0.9.6.

* Clarified tcp-queue-limit man page entry (Matti Linnanvuori).

* Added new OpenVPN icon and installer graphic.

* Minor pkitool changes.

* Added --pkcs11-id-management option, which will cause OpenVPN to
  query the management interface via the new NEED-STR asynchronous
  notification query to get additional PKCS#11 options (Alon Bar-Lev).

* Added NEED-STR management interface asynchronous query and
  "needstr" management interface command to respond to the query
  (Alon Bar-Lev).

* Added Dragonfly BSD support (Francis-Gudin).

* Quote device names before passing to up/down script (Josh Cepek).

* Bracketed struct openvpn_pktinfo with #pragma pack(1) to
  prevent structure padding from causing an incorrect length
  to be returned by sizeof (struct openvpn_pktinfo) on 64-bit
  platforms.

* On systems that support res_init, always call it
  before calling gethostbyname to ensure that
  resolver configuration state is current.

* Added NTLMv2 proxy support (Miroslav Zajic).

* Fixed an issue in extract_x509_field_ssl where the extraction
  would fail on the first field of the subject name, such as
  the common name in:  /CN=foo/emailAddress=foo@bar.com

* Made "Linux ip addr del failed" error nonfatal.

* Amplified --client-cert-not-required warning.

* Added #pragma pack to proto.h.

2008.01.29 -- Version 2.1_rc7

* Added a few extra files that exist in the svn repo but were
  not being copied into the tarball by make dist.

* Fixup null interface on close, don't use ip addr flush (Alon Bar-Lev).

2008.01.24 -- Version 2.1_rc6

* Fixed options checking bug introduced in rc5 where legitimate configuration
  files might elicit the error: "Options error: Parameter pkcs11_private_mode
  can only be specified in TLS-mode, i.e. where --tls-server or --tls-client
  is also specified."
	
2008.01.23 -- Version 2.1_rc5

* Fixed Win2K TAP driver bug that was introduced by Vista fixes,
  incremented driver version to 9.4.

* Windows build system changes:

  Incremented included OpenSSL version to openssl-0.9.7m.

  Updated openssl.patch for openssl-0.9.7m and added some
  brief usage comments to the head of the patch.

  Added build-pkcs11-helper.sh for building the pkcs11-helper
  library.

  Integrated inclusion of pkcs11-helper into Windows build
  system.

  Upgraded TAP build scripts to use WDK 6001.17121
  (Windows 2008 Server pre-RTM).

* Windows installer changes:

  Clean up the start menu folder.

  Allow for a site-specific sample configuration file and keys
  to be included in a custom installer (see SAMPCONF macros
  in settings.in). 

  New icon (temporary).

* Added "forget-passwords" command to the management interface
  (Alon Bar-Lev).

* Added --management-signal option to signal SIGUSR1 when the
  management interface disconnects (Alon Bar-Lev).

* Modified command line and config file parser to allow
  quoted strings using single quotes ('') (Alon Bar-Lev).

* Use pkcs11-helper as external library, can be downloaded from
  https://www.opensc-project.org/pkcs11-helper (Alon Bar-Lev).

* Fixed interim memory growth issue in TCP connect loop where
  "TCP: connect to %s failed, will try again in %d seconds: %s"
  is output.

* Fixed bug in epoll driver in event.c, where the lack of a
  handler for EPOLLHUP could cause 99% CPU usage.

* Defined ALLOW_NON_CBC_CIPHERS for people who don't
  want to use a CBC cipher for OpenVPN's data channel.

* Added PLUGIN_LIBDIR preprocessor string to prepend a default
  plugin directory to the dlopen search list when the user
  specifies the basename of the plugin only (Marius Tomaschewski).

* Rewrote extract_x509_field and modified COMMON_NAME_CHAR_CLASS
  to allow forward slash characters ("/") in the X509 common name
  (Pavel Shramov).

* Allow OpenVPN to run completely unprivileged under Linux
  by allowing openvpn --mktun to be used with --user and --group
  to set the UID/GID of the tun device node.  Also added --iproute
  option to allow an alternative command to be executed in place
  of the default iproute2 command (Alon Bar-Lev).

* Fixed --disable-iproute2 in ./configure to actually disable
  iproute2 usage (Alon Bar-Lev).

* Added --management-forget-disconnect option -- forget
  passwords when management session disconnects (Alon Bar-Lev).
	
2007.04.25 -- Version 2.1_rc4

* Worked out remaining issues with TAP driver signing
  on Vista x64.  OpenVPN will now run on Vista x64
  with driver signing enforcement enabled.

* Fixed 64-bit portability bug in time_string function
  (Thomas Habets).

2007.04.22 -- Version 2.1_rc3

* Additional fixes to TAP driver for Windows x64.  Driver
  now runs successfully on Vista x64 if driver signing
  enforcement is disabled.
	
* The Windows Installer and TAP driver are now signed by
  OpenVPN Solutions LLC (in addition to the usual GnuPG
  signatures).

* Added OpenVPN GUI (Mathias Sundman version) as install
  option in Windows installer.

* Clean up configure on FreeBSD for recent autotool versions
  that require that all .h files have to be compiled.
  Also, FreeBSD install does not support GNU long options
  which the Makefile in easy-rsa/2.0 uses (not checked the
  others as we don't install those on Gentoo) (Roy Marples).

* Added additional scripts to easy-rsa/Windows for working
  with password-protected keys; also add -extensions server
  option when generating server cert via
  build-key-server-pass.bat (Daniel Zauft).
	
2007.02.27 -- Version 2.1_rc2

* auth-pam change:  link with -lpam rather
  than dlopen (Roy Marples).

* Prevent SIGUSR1 or SIGHUP from causing program
  exit from initial management hold.

* SO_REUSEADDR should not be set on Windows TCP sockets
  because it will cause bind to succeed on port conflicts.

* Added time_ascii, time_duration, and time_unix
  environmental variables for plugins and callback
  scripts.

* Fixed issue where OpenVPN does not apply the --txqueuelen option
  to persistent interfaces made with --mktun (Roy Marples).

* Attempt at rational signal handling when in the
  management hold state.  During management hold, ignore
  SIGUSR1/SIGHUP signals thrown with the "signal" command.
  Also, "signal" command will now apply remapping as
  specified with the --remap-usr1 option.
  When a signal entered using the "signal" command from a management
  hold is ignored, output: >HOLD:Waiting for hold release

* Fixed issue where struct env_set methods that
